In both study groups, laparoscopic surgery was performed according to the standard surgical protocol. Local infiltration of port sites was performed by 4 ml xylocaine 1% at a maximum dose of 3 mg/kg. Standardized surgery involved 3 ports, a 5 or10-mm umbilical Hasson cannula and 3 or 5- mm left iliac fossa and suprapubic ports. Pneumoperitoneum was achieved using nonhumidified and nonheated CO2, with the intra-abdominal pressure maintained around 10-12 mmHg.